How to open a phone with a 3D printer (no joke)

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First, turn on your 3D printer and make sure that there is no residue (such as plastic) left on the print bed.

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Now set the heat of the print bed to 70-80 °C, depending on how capable your printer is. You can safely leave the hotend cool, we don't need it.

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Put the cell phone on the print bed.